In-line skate knapsack



FIG. 1 shows a top front and left side perspective view of the inline skate knapsack of the invention;

FIG. 2 shows a top plan view thereof;

FIG. 3 shows a front view thereof;

FIG. 4 shows a right side view thereof (left side being a mirror image);

FIG. 5 shows a rear view thereof; and,

FIG. 6 shows a bottom plan view thereof. 

The ornamental design for an inline skate knapsack, as shown and described. 